AWS SES error Transaction failed: Missing '"'

[ilnytskyi]

Preconditions (*)

Steps to reproduce (*)

1. Configure AWS SES
2. Pace an order with customer name like "Test
3. Use async sending
4. AWS throws errors like this

Transaction failed: Missing '"'

5. Magento cannot update the column email_sent in sales_order table

Expected result (*)

1. Email is sent correctly

Actual result (*)

1. Magento continuously trying to send the same email with no success because could not update the email_sent column
2. AWS SES says Transaction failed: Missing '"'

PS: example headers are

Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="utf-8"
Date: Wed, 02 Sep 2020 06:33:17 +0000
From: =?utf-8?Q?teststore.pl?= <[email protected]>
MIME-Version: 1.0
Message-ID: [email protected]
Received: from localhost by mailhog.example (MailHog)
          id [email protected]; Wed, 02 Sep 2020 06:33:17 +0000
Return-Path: <[email protected]>
Subject: =?utf-8?Q?=E2=9C=85=20Potwierdzenie=20z=C5=82o=C5=BCenia=20?= =?utf-8?Q?zam=C3=B3wienia=20w=20sklepie=20teststore.pl?=
To: =?utf-8?Q?"Test=20Test?= <[email protected]>

Our admins advised to check email headers here https://tools.ietf.org/tools/msglint/ That leads to this result

ERROR: unbalanced quote in header 'To' at line 0
ERROR: at least one address required at or before token '=?utf-8?Q?' in 
       header 'To' at line 0

Some characters are not escaped properly during an email sending. The problem may not exist on SMTP servers that do not follow standards as AWS SES does